[J-u-boot.git] / drivers / net / pic32_eth.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * (c) 2015 Purna Chandra Mandal <[email protected]>
 *
 */

#ifndef __MICROCHIP_PIC32_ETH_H_
#define __MICROCHIP_PIC32_ETH_H_

#include <linux/bitops.h>
#include <mach/pic32.h>

/* Ethernet */
struct pic32_ectl_regs {
	struct pic32_reg_atomic con1; /* 0x00 */
	struct pic32_reg_atomic con2; /* 0x10 */
	struct pic32_reg_atomic txst; /* 0x20 */
	struct pic32_reg_atomic rxst; /* 0x30 */
	struct pic32_reg_atomic ht0;  /* 0x40 */
	struct pic32_reg_atomic ht1;  /* 0x50 */
	struct pic32_reg_atomic pmm0; /* 0x60 */
	struct pic32_reg_atomic pmm1; /* 0x70 */
	struct pic32_reg_atomic pmcs; /* 0x80 */
	struct pic32_reg_atomic pmo;  /* 0x90 */
	struct pic32_reg_atomic rxfc; /* 0xa0 */
	struct pic32_reg_atomic rxwm; /* 0xb0 */
	struct pic32_reg_atomic ien;  /* 0xc0 */
	struct pic32_reg_atomic irq;  /* 0xd0 */
	struct pic32_reg_atomic stat; /* 0xe0 */
};

struct pic32_mii_regs {
	struct pic32_reg_atomic mcfg; /* 0x280 */
	struct pic32_reg_atomic mcmd; /* 0x290 */
	struct pic32_reg_atomic madr; /* 0x2a0 */
	struct pic32_reg_atomic mwtd; /* 0x2b0 */
	struct pic32_reg_atomic mrdd; /* 0x2c0 */
	struct pic32_reg_atomic mind; /* 0x2d0 */
};

struct pic32_emac_regs {
	struct pic32_reg_atomic cfg1; /* 0x200*/
	struct pic32_reg_atomic cfg2; /* 0x210*/
	struct pic32_reg_atomic ipgt; /* 0x220*/
	struct pic32_reg_atomic ipgr; /* 0x230*/
	struct pic32_reg_atomic clrt; /* 0x240*/
	struct pic32_reg_atomic maxf; /* 0x250*/
	struct pic32_reg_atomic supp; /* 0x260*/
	struct pic32_reg_atomic test; /* 0x270*/
	struct pic32_mii_regs mii;    /* 0x280 - 0x2d0 */
	struct pic32_reg_atomic res1; /* 0x2e0 */
	struct pic32_reg_atomic res2; /* 0x2f0 */
	struct pic32_reg_atomic sa0;  /* 0x300 */
	struct pic32_reg_atomic sa1;  /* 0x310 */
	struct pic32_reg_atomic sa2;  /* 0x320 */
};

/* ETHCON1 Reg field */
#define ETHCON_BUFCDEC		BIT(0)
#define ETHCON_RXEN		BIT(8)
#define ETHCON_TXRTS		BIT(9)
#define ETHCON_ON		BIT(15)

/* ETHCON2 Reg field */
#define ETHCON_RXBUFSZ		0x7f
#define ETHCON_RXBUFSZ_SHFT	0x4

/* ETHSTAT Reg field */
#define ETHSTAT_BUSY		BIT(7)
#define ETHSTAT_BUFCNT		0x00ff0000

/* ETHRXFC Register fields */
#define ETHRXFC_BCEN		BIT(0)
#define ETHRXFC_MCEN		BIT(1)
#define ETHRXFC_UCEN		BIT(3)
#define ETHRXFC_RUNTEN		BIT(4)
#define ETHRXFC_CRCOKEN		BIT(5)

/* EMAC1CFG1 register offset */
#define PIC32_EMAC1CFG1		0x0200

/* EMAC1CFG1 register fields */
#define EMAC_RXENABLE		BIT(0)
#define EMAC_RXPAUSE		BIT(2)
#define EMAC_TXPAUSE		BIT(3)
#define EMAC_SOFTRESET		BIT(15)

/* EMAC1CFG2 register fields */
#define EMAC_FULLDUP		BIT(0)
#define EMAC_LENGTHCK		BIT(1)
#define EMAC_CRCENABLE		BIT(4)
#define EMAC_PADENABLE		BIT(5)
#define EMAC_AUTOPAD		BIT(7)
#define EMAC_EXCESS		BIT(14)

/* EMAC1IPGT register magic */
#define FULLDUP_GAP_TIME	0x15
#define HALFDUP_GAP_TIME	0x12

/* EMAC1SUPP register fields */
#define EMAC_RMII_SPD100	BIT(8)
#define EMAC_RMII_RESET		BIT(11)

/* MII Management Configuration Register */
#define MIIMCFG_RSTMGMT		BIT(15)
#define MIIMCFG_CLKSEL_DIV40	0x0020	/* 100Mhz / 40 */

/* MII Management Command Register */
#define MIIMCMD_READ		BIT(0)
#define MIIMCMD_SCAN		BIT(1)

/* MII Management Address Register */
#define MIIMADD_REGADDR		0x1f
#define MIIMADD_REGADDR_SHIFT	0
#define MIIMADD_PHYADDR_SHIFT	8

/* MII Management Indicator Register */
#define MIIMIND_BUSY		BIT(0)
#define MIIMIND_NOTVALID	BIT(2)
#define MIIMIND_LINKFAIL	BIT(3)

/* Packet Descriptor */
/* Received Packet Status */
#define _RSV1_PKT_CSUM		0xffff
#define _RSV2_CRC_ERR		BIT(20)
#define _RSV2_LEN_ERR		BIT(21)
#define _RSV2_RX_OK		BIT(23)
#define _RSV2_RX_COUNT		0xffff

#define RSV_RX_CSUM(__rsv1)	((__rsv1) & _RSV1_PKT_CSUM)
#define RSV_RX_COUNT(__rsv2)	((__rsv2) & _RSV2_RX_COUNT)
#define RSV_RX_OK(__rsv2)	((__rsv2) & _RSV2_RX_OK)
#define RSV_CRC_ERR(__rsv2)	((__rsv2) & _RSV2_CRC_ERR)

/* Ethernet Hardware Descriptor Header bits */
#define EDH_EOWN		BIT(7)
#define EDH_NPV			BIT(8)
#define EDH_STICKY		BIT(9)
#define _EDH_BCOUNT		0x07ff0000
#define EDH_EOP			BIT(30)
#define EDH_SOP			BIT(31)
#define EDH_BCOUNT_SHIFT	16
#define EDH_BCOUNT(len)		((len) << EDH_BCOUNT_SHIFT)

/* Ethernet Hardware Descriptors
 * ref: PIC32 Family Reference Manual Table 35-7
 * This structure represents the layout of the DMA
 * memory shared between the CPU and the Ethernet
 * controller.
 */
/* TX/RX DMA descriptor */
struct eth_dma_desc {
	u32 hdr;	/* header */
	u32 data_buff;	/* data buffer address */
	u32 stat1;	/* transmit/receive packet status */
	u32 stat2;	/* transmit/receive packet status */
	u32 next_ed;	/* next descriptor */
};

#define PIC32_MDIO_NAME "PIC32_EMAC"

int pic32_mdio_init(const char *name, ulong ioaddr);

#endif /* __MICROCHIP_PIC32_ETH_H_*/
Commit	Line	Data
83d290c5	1	/* SPDX-License-Identifier: GPL-2.0+ */
23e7578c PCM	2	/*
	3	* (c) 2015 Purna Chandra Mandal <[email protected]>
	4	*
23e7578c PCM	5	*/
	6
	7	#ifndef __MICROCHIP_PIC32_ETH_H_
	8	#define __MICROCHIP_PIC32_ETH_H_
	9
cd93d625	10	#include <linux/bitops.h>
23e7578c PCM	11	#include <mach/pic32.h>
	12
	13	/* Ethernet */
	14	struct pic32_ectl_regs {
	15	struct pic32_reg_atomic con1; /* 0x00 */
	16	struct pic32_reg_atomic con2; /* 0x10 */
	17	struct pic32_reg_atomic txst; /* 0x20 */
	18	struct pic32_reg_atomic rxst; /* 0x30 */
	19	struct pic32_reg_atomic ht0; /* 0x40 */
	20	struct pic32_reg_atomic ht1; /* 0x50 */
	21	struct pic32_reg_atomic pmm0; /* 0x60 */
	22	struct pic32_reg_atomic pmm1; /* 0x70 */
	23	struct pic32_reg_atomic pmcs; /* 0x80 */
	24	struct pic32_reg_atomic pmo; /* 0x90 */
	25	struct pic32_reg_atomic rxfc; /* 0xa0 */
	26	struct pic32_reg_atomic rxwm; /* 0xb0 */
	27	struct pic32_reg_atomic ien; /* 0xc0 */
	28	struct pic32_reg_atomic irq; /* 0xd0 */
	29	struct pic32_reg_atomic stat; /* 0xe0 */
	30	};
	31
	32	struct pic32_mii_regs {
	33	struct pic32_reg_atomic mcfg; /* 0x280 */
	34	struct pic32_reg_atomic mcmd; /* 0x290 */
	35	struct pic32_reg_atomic madr; /* 0x2a0 */
	36	struct pic32_reg_atomic mwtd; /* 0x2b0 */
	37	struct pic32_reg_atomic mrdd; /* 0x2c0 */
	38	struct pic32_reg_atomic mind; /* 0x2d0 */
	39	};
	40
	41	struct pic32_emac_regs {
	42	struct pic32_reg_atomic cfg1; /* 0x200*/
	43	struct pic32_reg_atomic cfg2; /* 0x210*/
	44	struct pic32_reg_atomic ipgt; /* 0x220*/
	45	struct pic32_reg_atomic ipgr; /* 0x230*/
	46	struct pic32_reg_atomic clrt; /* 0x240*/
	47	struct pic32_reg_atomic maxf; /* 0x250*/
	48	struct pic32_reg_atomic supp; /* 0x260*/
	49	struct pic32_reg_atomic test; /* 0x270*/
	50	struct pic32_mii_regs mii; /* 0x280 - 0x2d0 */
	51	struct pic32_reg_atomic res1; /* 0x2e0 */
	52	struct pic32_reg_atomic res2; /* 0x2f0 */
	53	struct pic32_reg_atomic sa0; /* 0x300 */
	54	struct pic32_reg_atomic sa1; /* 0x310 */
	55	struct pic32_reg_atomic sa2; /* 0x320 */
	56	};
	57
	58	/* ETHCON1 Reg field */
	59	#define ETHCON_BUFCDEC BIT(0)
	60	#define ETHCON_RXEN BIT(8)
	61	#define ETHCON_TXRTS BIT(9)
	62	#define ETHCON_ON BIT(15)
	63
	64	/* ETHCON2 Reg field */
	65	#define ETHCON_RXBUFSZ 0x7f
	66	#define ETHCON_RXBUFSZ_SHFT 0x4
	67
	68	/* ETHSTAT Reg field */
	69	#define ETHSTAT_BUSY BIT(7)
	70	#define ETHSTAT_BUFCNT 0x00ff0000
	71
	72	/* ETHRXFC Register fields */
	73	#define ETHRXFC_BCEN BIT(0)
	74	#define ETHRXFC_MCEN BIT(1)
75	#define ETHRXFC_UCEN BIT(3)
76	#define ETHRXFC_RUNTEN BIT(4)
77	#define ETHRXFC_CRCOKEN BIT(5)
78
79	/* EMAC1CFG1 register offset */
80	#define PIC32_EMAC1CFG1 0x0200
81
82	/* EMAC1CFG1 register fields */
83	#define EMAC_RXENABLE BIT(0)
84	#define EMAC_RXPAUSE BIT(2)
85	#define EMAC_TXPAUSE BIT(3)
86	#define EMAC_SOFTRESET BIT(15)
87
88	/* EMAC1CFG2 register fields */
89	#define EMAC_FULLDUP BIT(0)
90	#define EMAC_LENGTHCK BIT(1)
91	#define EMAC_CRCENABLE BIT(4)
92	#define EMAC_PADENABLE BIT(5)
93	#define EMAC_AUTOPAD BIT(7)
94	#define EMAC_EXCESS BIT(14)
95
96	/* EMAC1IPGT register magic */
97	#define FULLDUP_GAP_TIME 0x15
98	#define HALFDUP_GAP_TIME 0x12
99
100	/* EMAC1SUPP register fields */
101	#define EMAC_RMII_SPD100 BIT(8)
102	#define EMAC_RMII_RESET BIT(11)
103
104	/* MII Management Configuration Register */
105	#define MIIMCFG_RSTMGMT BIT(15)
106	#define MIIMCFG_CLKSEL_DIV40 0x0020 /* 100Mhz / 40 */
107
108	/* MII Management Command Register */
109	#define MIIMCMD_READ BIT(0)
110	#define MIIMCMD_SCAN BIT(1)
111
112	/* MII Management Address Register */
113	#define MIIMADD_REGADDR 0x1f
114	#define MIIMADD_REGADDR_SHIFT 0
115	#define MIIMADD_PHYADDR_SHIFT 8
116
117	/* MII Management Indicator Register */
118	#define MIIMIND_BUSY BIT(0)
119	#define MIIMIND_NOTVALID BIT(2)
120	#define MIIMIND_LINKFAIL BIT(3)
121
122	/* Packet Descriptor */
123	/* Received Packet Status */
124	#define _RSV1_PKT_CSUM 0xffff
125	#define _RSV2_CRC_ERR BIT(20)
126	#define _RSV2_LEN_ERR BIT(21)
127	#define _RSV2_RX_OK BIT(23)
128	#define _RSV2_RX_COUNT 0xffff
129
130	#define RSV_RX_CSUM(__rsv1) ((__rsv1) & _RSV1_PKT_CSUM)
131	#define RSV_RX_COUNT(__rsv2) ((__rsv2) & _RSV2_RX_COUNT)
132	#define RSV_RX_OK(__rsv2) ((__rsv2) & _RSV2_RX_OK)
133	#define RSV_CRC_ERR(__rsv2) ((__rsv2) & _RSV2_CRC_ERR)
134
135	/* Ethernet Hardware Descriptor Header bits */
136	#define EDH_EOWN BIT(7)
137	#define EDH_NPV BIT(8)
138	#define EDH_STICKY BIT(9)
139	#define _EDH_BCOUNT 0x07ff0000
140	#define EDH_EOP BIT(30)
141	#define EDH_SOP BIT(31)
142	#define EDH_BCOUNT_SHIFT 16
143	#define EDH_BCOUNT(len) ((len) << EDH_BCOUNT_SHIFT)
144
145	/* Ethernet Hardware Descriptors
146	* ref: PIC32 Family Reference Manual Table 35-7
147	* This structure represents the layout of the DMA
148	* memory shared between the CPU and the Ethernet
149	* controller.
150	*/
151	/* TX/RX DMA descriptor */
152	struct eth_dma_desc {
153	u32 hdr; /* header */
154	u32 data_buff; /* data buffer address */
155	u32 stat1; /* transmit/receive packet status */
156	u32 stat2; /* transmit/receive packet status */
157	u32 next_ed; /* next descriptor */
158	};
159
160	#define PIC32_MDIO_NAME "PIC32_EMAC"
161
162	int pic32_mdio_init(const char *name, ulong ioaddr);
163
164	#endif /* __MICROCHIP_PIC32_ETH_H_*/